Air-refrigerating apparatus



(No Model.)

0. P. MARSHALL.

AIR REFRIGERATING APPARATUS.

N0. 310,212. Patented Jan. 6,1885.

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UNITED STATES PATENT ()EFIcE.

CHARLES P. MARSHALL, OF MEMPHIS, TENNESSEE.

AIR-REFRIGERATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 310,212, dated January6, 1885 Application filed May 14, 1884. (No model.)

1'0 all whom it may concern/.-

Be it known that I, CHARLES P. llIARSIIALL, a citizen of the UnitedStates, residing at Memphis, in the county of Shelby and State ofTennessee, have invented certain new and useful Improvements inAir-Refrigerating Apparatus, of which the following is a specification.

The object of the present invention is to cool the air of a refrigeratoror railroad-car or other chamber by passing the warmer air of the top ofthe compartment continuously into and around an ice-chest, thearrangement of the apparatus being such that circulation of the warm airfrom the compartment into the top of the ice-chest and of the cold airfrom the bottom of the ice-chest into the compartment is continuouslyeffected. To this end I place the ice-chest in any suitable part of thecompartment, and provide it with one or any number of air-pipes, towhich air is supplied from the top of the compartment by hoods suitablyarranged. The sides of the chest are made double, open at bottom, andprovided at top with means of access of the warmer air, which enteringthe jacket and striking the cold sides of the icechest will descend intothe lower part of the compartment to be cooled, and thus maintain acoustant circulation of air. Ordinary traps are provided for the escapeof water from the icechest, protected bya metallic guard in a mannersubsequently to be described.

In order that my invention may be fully understood, I will proceed todescribe it with reference to the accompanying drawings, in which-Figure 1 is a plan of the improved refrigerating apparatus, partof thetop being broken away and the cover being removed to showthe arrangementof the air-pipes. Fig. 2 is a vertical section of the same on the lineII II, Fig. 1. Fig. 3 is a vertical section on thelin III III, Fig. 2.

1 may represent any space or chamber the air of which it is desired tocool.

2 is an ice-chest, here shown supported from the roofof the chamber andfrom one of the sides thereof and covered by a hinged door, 2 The sidesof the ice-chest are doublewalied, as shown, the jacket thus formedbeing open at bottom for the free egress of cold air. Access of the warmair of the top of the chamber to the jackets 3 is provided bypipes 4 and6, having hoods 7, and by inlet-ports 11 and 12 in the walls. The pipes4 6 communicate with the rear jacket, the inlet 11 with the front one,and the inlets 12 with the sides. The inlet 11 is made the full width ofthe ice-chest. It will be seen that the warm air from the top of therefrigerating-chamber entering these inlet-s will strike the cold wallsf the ice-chest, and descending through the open bottom of the jacketwill maintain a constant circulation of air throughout the compartment.Vertical pipe or pipes 8 are arranged within the ice-chest, and receiveair from the top of the rcfrigeratirig-chamber by pipe 5 and hood 7. Thepipe or pipes 8 have an elbow, 13, at bottom for directing the cold airfalling through said pipe or pipes outinto the chamber.

10 is a diaphragm placed transverse of the refrigeratirig-chamber nearits top, so as to defleet all the warm air rising in the compartmentinto one or the other of the hoods 7 or apertures 11 12.

M l-iare customary traps permitting the escape of water from theice-chest, and 14 is a perforated metal plate divided at center forconvenience of insertion into or removal from the ice chest. The purposeof said plate is to prevent the ice from resting upon and clogging thetraps. The water falling from the traps is caught by pan 15 and led intotrough 16, whence it is discharged by pipe 17.

18 is a fan, which is placed above the dia phragm l0 and arranged todraw air out of the chamber 1 into the eye of the fan and discharge itthrough the pipes 5 8, thus increas ing the rapidity of circulation andthe rare'faction of air within the chamber 1.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

1. The combination, with the ice-chest 2, having double jackets 3, openat bottom, as described, of the pipes 4 6, passing through the ice-chest2 and opening into the space between 100 the jackets on the oppositeside thereof, as and 7, the diaphragm 10 for deflecting the air risforthe purpose set forth. ing in the compartment into said hoods, as

2. The combination of ice-chest 2, doubleshown and described. jacketed,as shown, pipes 4L 6, having hoods CHAS. P. MARSHALL. 5 7, andingress-ports l1 12, substantially and 1 \Vitnesses:

for the purpose set fort-11. JOHN B. OLoUGn,

3. In combination with pi pcs 4 5 6 and hoods J. E. LEWIs.

